EP2067108B1 - Lokalisierung von referenzknoten zur positionierung - Google Patents

Lokalisierung von referenzknoten zur positionierung Download PDF

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Publication number
EP2067108B1
EP2067108B1 EP07826194.8A EP07826194A EP2067108B1 EP 2067108 B1 EP2067108 B1 EP 2067108B1 EP 07826194 A EP07826194 A EP 07826194A EP 2067108 B1 EP2067108 B1 EP 2067108B1
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Prior art keywords
devices
plan
node
nodes
unique
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French (fr)
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EP2067108A2 (de
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Paul R. Simons
Stephen M. Pitchers
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Signify Holding BV
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Koninklijke Philips NV
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0284—Relative positioning
    • G01S5/0289—Relative positioning of multiple transceivers, e.g. in ad hoc networks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2111/00—Details relating to CAD techniques
    • G06F2111/02—CAD in a network environment, e.g. collaborative CAD or distributed simulation

Definitions

  • the invention relates to device configuration in a network. Particularly, it relates to a method and apparatus for matching an actual device in a wireless network to a corresponding device in a plan of such devices.
  • Lighting control systems are becoming commonplace in commercial and domestic establishments. Many of these systems comprise devices that can communicate wirelessly, which introduces increased flexibility in the system since all the links are fully programmable.
  • the lighting control systems are typically installed in accordance with a detailed building plan indicating the location of each device.
  • the information in the building plan is stored in records in a database used by a program for controlling the system.
  • the records also include the functionality of each device, which has either been manually entered or derived using algorithms of the program.
  • the identification number (ID) of each node needs to be added to the record corresponding to that node.
  • the process for matching each node stored in the computer program with the ID of the actual node in the network is typically performed after the installation of the system has been completed.
  • Patent publication WO 2006/095317 describes the automated commissioning of a wireless lighting system by triangulating range measurements from known devices within a network and matching these devices in the system to corresponding records in the building plan. Once a position of a new device is established it can be used as an additional reference point. This process can continue until all the devices in a whole floor or building are identified. However, to begin this process, the commissioning typically requires at least three devices in the system with known coordinates that can act as reference points which can be used to locate other devices. These reference points are usually established by the installation engineer using the conventional method, i.e. the engineer obtains the barcodes for the three reference points, finds the records for the devices in the memory of a computer used for carrying out the commissioning and stores the IDs in the relevant records. After the reference points have been established, the automatic commissioning can start.
  • US 2005/0228613 and US 2004/0232856 also disclose methods of determining the position of nodes in a network with respect to reference nodes with known positions in the network.
  • the invention addresses the issues discussed above.
  • the plan may comprise a record for each device indicating the coordinates of that device in a coordinate system.
  • the received data may include a unique ID of the device and the method may further comprise storing the unique ID of the device and the method may further comprise storing the unique ID in the record of the identified device.
  • the invention provides a method of establishing reference nodes without requiring a user to read the barcodes off the nodes and entering the IDs manually in the computer system.
  • the unique characteristic may comprise a unique type of the device or a unique distance range to another device in the system.
  • the received data from the device may include the type of the device and the range measurements between the device and its neighbours.
  • the type may include at least one of the make, model and number of end points of the device.
  • one device may be identified since it is the only luminaire of a specific model in the system and a switch may be identified since it is the switch located closest to the identified luminaire out of all switches in the system.
  • the range measurements may be obtained by analysing signals sent from the device to its neighbours or signals sent from the neighbours to the device.
  • a computer program comprising computer executable instructions that when executed by a processor cause the processor to perform the method as defined above.
  • the information corresponding to a plan of devices may include a record for each device indicating the coordinates of each device in a coordinate system.
  • the received data may include a unique ID of said actual device and the means for matching are operable to store the unique ID in the record of said identified device.
  • the unique characteristics may comprise a unique type of the device or a unique distance range to another device in the system.
  • the received data from said actual device may include the type of said actual device and the distance measurements between said actual device and its neighbouring devices.
  • the wireless system may be a lighting system or a home automation network.
  • the apparatus may be a personal computer.
  • the apparatus may form part of a system comprising a plurality of devices connected in a wireless network, the plurality of devices comprising at least one gateway operable to communicate with the apparatus.
  • the gateway may be configured to communicate with said apparatus over a LAN link.
  • the plurality of devices may comprise a plurality of ZigBee devices.
  • a building plan 1 of a lighting control system 2 is shown in Figure 1 .
  • the system includes a number of gateway devices 3a to 3c, switches 4, 5a, 5b, 6a-6c, presence detectors 7a to 7d and luminaires 8a to 8f, 9a to 9f, 10, 11a and 11b, which are configured to communicate with each other in a wireless network.
  • the gateways 3a to 3c also include functionality for connecting the wireless network to an external network.
  • the system may extend over a number of floors but only the devices located on a single floor are shown in Figure 1 .
  • the building plan shows an office, including an open area 12, a number of personal offices, 13a to 13c, a server room 14, a kitchen 15, a toilet 16 and a hallway 17 including a staircase.
  • the devices in the system are of a large number of different types, defined by, for example, their functionality, make, model and number of end-points.
  • An end-point is a component of a device that needs to be controlled separately from the other components in the system, for example, a number of light bulbs connected together, or a component that controls other end-points, for example a number of buttons on a switch device.
  • the different types of devices in the system are indicated with a different number, whereas devices of the same type are indicated with a different letter of the alphabet.
  • the switches in the system 2 come in three different types, a switch 4 at one of the entrances to the floors, which can be used to switch on and off the lights located on that floor, two switches 5a and 5b in the kitchen and in the staircase respectively for controlling the lights in the kitchen and the staircase and three dimmer switches 6a to 6c located in various locations around the office.
  • Luminaires of different types are also provided including ceiling lights 8a to 8f for the kitchen and the open area, ceiling lights 9a to 9f for the personal offices and the staircase, a special lamp for the server room 10 and two ceiling lights 11a and 11b in the toilet.
  • Each device of the system comprises a wireless transceiver to allow the device to act as a node in a wireless network.
  • the wireless transceiver may, for example, operate according to the ZigBeeTM protocol. According to the ZigBeeTM standard, tens of thousands of devices can be wirelessly connected to form a network. However, it may be desirable to divide the devices into a number of separate networks for easier operation. Typically, a separate network for each floor is used.
  • a device operating according to the ZigBee protocol operates in 2.4Ghz, 915MGz and/or 868MHz radio frequency bands; support raw data transfers rates of 250kilobits per second (kbps), 40kbps and 20kbps respectively and have a transmission range typically between 10 and 75 metres.
  • the transmission range may be between 2 and 5 meters.
  • ZigBee device There are three main types of ZigBee device, namely a network controller, a router and an end device. There may be thousands of routers and end devices in a network but only one network controller. The routers can route messages from one node to another. The end devices can only respond to the node that initiated the conversation. The devices of the system that are not connected to the mains may be provided as end devices since end devices require less power and can run on battery. In the system of Figure 1 , at least all the gateways, 3a to 3c, have router capability, but only one of the routers act as a network coordinator.
  • the network may be split up into smaller sub-networks wherein each gateway is a coordinator of a sub-network. One of the gateways may then act as the master coordinator.
  • the wireless transceivers allow the devices of the system to communicate with a central processing device 18 via the gateways 3a to 3c.
  • the central processing device may be a PC or a laptop located in the server room 14.
  • the central processing device can also be located offsite.
  • the central processing device and the gateways are both connected to a Local Area Network (LAN), for example the Ethernet.
  • LAN Local Area Network
  • the link between the PC and the gateways can also be wireless, for example as part of a WiFi network, ZigBee network or any other suitable network.
  • the network over which the PC and the gateways communicate will be described as an Ethernet network. However, it should be realised that this is an example only.
  • a device of the system which could be a switch 4, 5a-5b, 6a-6c, a presence detector 7a-7d or a luminaire 8a-8f, 9a-9f, 10, 11-11b, comprises a memory 19, a processor 20, a clock 21, a short range transceiver 22, operating according to the ZigBee protocol, a power source 23 and a application unit 24.
  • the application unit 24 determines whether the device is a luminaire, a switch, of a presence detector. It also determines which type, for example, the model, make and the number of end-points, of luminaire, switch or presence detector. For example, if the apparatus is a luminaire, the application 24 provides a light source. If the apparatus is a switch, the application unit provides the switching functionality and if the apparatus is a presence detector, the application unit 19 provides the detecting functionality.
  • the instructions and settings for operating in the system are stored in the memory 19 of the device.
  • the gateway may store most of the instructions and perform most of the processing for a device if, for example, the device is subject to power restrictions.
  • the processor may be a microprocessor. However, any suitable processor could be used.
  • the power source is either a battery or a connection to the mains depending on the type and location of the device.
  • a gateway 3a-3b also comprises a memory 25, a processor 26, a clock 27, a short-range transceiver unit 28 and a power source 29.
  • the memory of the gateway and the processing power of the processor is likely to be better than the memory and the processing power of the device shown in Figure 2 , since the gateway has to handle and process information for a plurality of nodes.
  • the power source is typically a connection to the mains.
  • the gateway also comprises a network interface 30 for connecting to the Ethernet.
  • a central processing device in the form of a personal computer comprises a processor 31 connected to memory 32 such as a Random Access Memory (RAM) and storage 33 such as Read Only Memory (ROM).
  • the processor 31 also connects to a removable storage interface 34, for example, a CD drive or a floppy disk drive.
  • the processor receives user instructions from one or more user input devices 35, such as a mouse or a keypad, and it communicates information to a user using a display 36.
  • the processor may also connect to a network interface 37 such as an Ethernet Network card reader.
  • the processor, the memory, the storage, the removable storage interface, user input devices, display and network interface all communicate with each other using a bus 38.
  • the ceiling lamps in the kitchen 8e, 8f may be configured to come on in response to the presence detector 7a detecting people in the open area 12 of the office.
  • the ceiling lamps may be reconfigured to be controlled only by the switch 5a in the kitchen 15.
  • the lights in the hallway may be constantly on but after 6pm they may be configured to come on only when switch 5b is operated and then only for a period of ten minutes before switching off again.
  • the functionality can be specified using the computer program run on the computer 18 in the server room 14. Alternatively, the functionality can be specified in another location and transferred to the computer using the removable storage interface 34 or the network interface 37 of the computer 18.
  • the program may also run algorithms for automatically deriving the clusters of the system, for example, which luminaires are controlled by a particular switch.
  • the instructions for implementing the functionality are sent from the computer 18 to the devices in the network via Ethernet and the gateways 3a-3c.
  • the processes associated with the lighting control system includes designing the system 5.1, installing the system 5.2, commissioning the system 5.3, operating the system 5.4 and amending the system 5.5. After the system has been amended, the system can be operated again 5.4 as amended.
  • the program typically also provides a graphical user interface for allowing the user to interact more easily and intuitively with the devices and the data stored in the system.
  • the software may be based on conventional software such as AutoCADTM or LonMakerTM.
  • the designing of the system may include importing an architectural drawing of the building into the graphical user interface and defining the location of the devices with respect to the architectural drawing. A coordinate system may then be established with respect to the drawings and the coordinates of each device may be calculated.
  • the functionality may be manually defined for each device using the graphical user interface and/or automatically defined using algorithms that form part of the software suite.
  • the algorithm may identify the luminaires located closest to a particular switch or presence detector and establish links between the luminaires and the switch/presence detector.
  • Installing the system includes an engineer installing the devices according to the building plan. After the devices have been installed, the system can be commissioned. The commissioning process will be described in more detail below with respect to Figures 6 to 11 . When the commissioning process is completed, the system can be operated.
  • the instructions and settings are stored in the gateways and the wireless network can operate independently of the data and programs stored in computer.
  • the software suite is used to amend the functionality of the operating system, if required at later date. For example, some of the devices may be moved and so new instructions may be required to provide the functionality required in the new location.
  • the system may also be updated to provide new functionality. After the amendments have been made, the new instructions are sent to the network and the network can continue to operate as amended.
  • the process of commissioning the system will now be described with reference to Figures 6 to 11 .
  • the commissioning process typically starts after all the devices have been installed.
  • An engineer located either on or off site starts the commissioning process. It is preferred that the engineer is located on site to manually solve any problems that might occur. However, it is also possible that the engineer can commission the system remotely by connecting over, for example, a LAN or the Internet to a computer 18 onsite.
  • a program for commissioning and controlling the lighting system is used by the engineer to commission the system.
  • the program along with any records and settings will be described to be loaded on the computer 18 on site.
  • the program could also be run on a remote computer connected to the computer 18 onsite, or possibly by a supervisory network node such as a gateway device.
  • the nodes are powered up at step 6.1. This is normally performed by switching on the power to the system, which can be done either manually or using the graphical user interface of the computer program for controlling the system. On power up, all nodes turn to a control channel and a discovery process is initiated.
  • each node sends a message to "advertise" its presence.
  • the message contains the type, including for example the functionality and number of end points, and the ID of the node from which the message originated.
  • the message also includes a request for other nodes to identify themselves.
  • Each node then creates a binding table of all available nodes and the type of those nodes at step 6.4. It is quite likely that a particular node is not able to contact all nodes in the system directly, since some of the nodes may be out of range. However, all nodes forward data about their neighbouring nodes and the optimum route for contacting a specific node can be determined using this data. After the binding tables have been compiled, the nodes typically continue to send new discovery messages at regular intervals in case new nodes appear.
  • the commissioning engineer inputs an instruction at step 7.1 in the system to start the process of matching the signals from the physical devices to the stored devices in the database.
  • the instruction triggers the computer running the computer program to send a request to one of the gateways, 3a, 3b or 3c, of the system as shown in Figure 8 to obtain a description of the network.
  • the gateway responds with the IDs, functionality and number of endpoints of each node in the network at step 7.2.
  • the program compares the number and types of devices with the number and types indicated by the building plan at step 7.3. If all devices are not accounted for, an error message may be output to the engineer.
  • the program compiles a list of nodes as reported by the network including the ID and the type of the nodes. For example, the list may be in the order of ascending IDs.
  • the program selects a first node in the list of nodes and transmits a request for range measurements for that node.
  • the request is received by the gateway and forwarded to the node concerned at step 7.6 as shown schematically in Figure 8 .
  • the node performs range measurements with all the other nodes of the system located within its transmission range at step 7.6 in response to receiving the request.
  • a node may be within the transmission range of all other nodes in the network. Accordingly, the range measurements between the node and all the other nodes in the network may be obtained.
  • Range measurements can be performed in a number of ways and will not be described in detail herein.
  • One common way includes measuring the time of transmission of a signal from a first node and the time of arrival of the signal at a second node. The distance between the nodes can then be calculated by multiplying the time between the time of arrival and the time of transmission by the speed of light. The measurement can be improved and corrected for any time delay between the clocks 21, 27 of the two nodes by also measuring the time it takes for a second signal transmitted from the second node to the first node and averaging the two measurements. Any time delay between the clocks will then be cancelled out.
  • Another known way of obtaining range measurements in wireless systems includes measuring the power of a signal when it is received. The attenuation of the power of the signal is related to the distance the signal has travelled.
  • the nodes calculate the range to each of their neighbours using any well-known method at step 7.7 and transmit the range measurements to the gateway at step 7.8 as shown in Figure 8 . If a node has reduced processing capability it may transmit the measured data to the gateway and the gateway will calculated the distances between the nodes and its neighbours.
  • a signal indicating the distances between the selected node and its nearest neighbours is transmitted to the computer 18.
  • the computer receives the range measurement it creates a table wherein the first column and the first row of the cable include the lists of IDs and types of the nodes in the network.
  • the range table is then updated at step 7.10 with the range measurements, i.e. the range measurement between a first node and a second node is provided at the intersection of the row including the ID of the first node and the column including the ID of the second node.
  • An example of a part of such a table is schematically shown in Figure 9 and will be described in more detail below.
  • the computer thereafter compares the number of the selected node with the total number of nodes in the list determined at step 7.3. If the number of the node is smaller than the total number of nodes, the process continues to step 7.12 and n is incremented by 1. Steps 7.5 to 7.10 are then repeated for the next node until range measurements for all nodes have been obtained and stored in the table of Figure 9 .
  • Figure 8 only shows the range measurements performed by one node, i.e. the range measurements performed as a result of a single iteration through the loop defined by steps 7.5 to 7.12 of Figure 7 . Each time the system repeats the loop, the range measurements between a new node and all its neighbours are calculated.
  • the distance between two nodes are determined twice, both on a request to the first node and on a request to the second node. This ensures that all measurements can be checked and errors can be detected. For example, it is contemplated that if the two measurements do not match, the measurements are repeated.
  • step 7.13 When it is determined at step 7.11 that range measurements for all nodes have been obtained, the process continues to step 7.13 and the program creates a table corresponding to the table of Figure 9 but comprising values for the distances between the nodes calculated from the building plan rather than based on the range measurements in the wireless system.
  • An example of part of such a table is shown in Figure 10 .
  • the nodes are ordered in dependence on their type.
  • the two tables are then compared at step 7.14 to match the IDs of the devices in the first table with the devices indicated in the building plan and included in the second table.
  • the comparison typically includes two main processes. Firstly, an initial number of reference nodes are established. Secondly, the coordinates of all the remaining nodes with respect to the coordinates of already matched nodes are obtained. It is possible that in some systems, the method used for establishing the initial number of reference nodes can be used to match all the nodes in the system. In that case, the second main process is never performed.
  • the table of Figure 9 comprises a first column listing the IDs and the types of the devices of the system and a first row also listing the IDs and the types of the devices of the system.
  • the rest of the table then lists the distances between respective devices of the system as indicated by the range measurements.
  • the order the nodes are listed in the table may depend on how the data for each node was received at the computer 18. For example, it is likely that they are listed in the order of ascending ID.
  • the type of the devices is also included. In Figure 9 the type is indicated with the reference number used in Figure 1 , i.e. 3 indicates a gateway, 4, 5, 6 indicates different types of switches, 7 indicates a presence detector and 8, 9, 10 and 11 indicate different types of luminaires.
  • the table of Figure 10 comprises a first column listing the reference numbers of the nodes indicated on the building plan stored in the system and a first row also listing the numbers of each node in the plan. The rest of the table then lists the distances between respective devices in the system as calculated from the building plan. The nodes are listed in the order of the reference numbers of the building plan, i.e. first all the gateways are listed, then all the switches, then the presence detectors and finally all the luminaires.
  • the tables of Figures 9 and 10 do not include measured or calculated ranges between all the nodes. If two nodes are out of transmission range, an X is shown in the table instead of the distance between the two devices. In other embodiments, algorithms are used for calculating the distance between two devices not in direct communication with each other and the distances between the devices are also stored in the table.
  • the method for matching the nodes in the table of Figure 9 with the nodes in the table of Figure 10 comprises establishing reference nodes in the system. As the positions of unknown devices are established, these devices can then be used as reference points for finding the position of further devices.
  • the process for establishing the initial reference nodes includes identifying nodes that have unique characteristics. For example, if the system includes a single node of a specific type, then that node can easily be identified in both the tables of Figure 9 and 10 and the nodes can be matched up.
  • the algorithm for establishing reference nodes in the system is reset at step 11.1, i.e. the number of reference nodes is set to zero.
  • the software for commissioning the system analyses the building plan and identifies a node of a unique type in the system, for example the switch 4 located at the entrance to the floor. The system then analyses the information stored in the table of Figure 9 at step 11.3 and identifies a node of the same type as node 4 in the building plan.
  • the information in the table of Figure 9 also includes the unique ID for that particular node, i.e. 106.
  • the system copies the ID from the table of Figure 9 at step 11.4 and stores the ID in the record for node 4 in the program at step 11.5. Consequently, a first reference node has now been established and n is incremented by 1 at step 11.6.
  • step 11.7 the system checks whether n is smaller than the total number of nodes N in the system. If n is equal to or larger than the N all the nodes in the system have been matched and the system proceeds to step 11.8 where the process for matching the nodes ends. Conversely, if n is smaller than N, the system returns to step 11.2 and a check is carried out to determine whether there are any additional nodes of unique types in the system.
  • step 11.2 If at step 11.2 it is determined that there are more nodes in the system with unique types, steps 11.3 to 11.7 are repeated until all nodes with unique types are found and the IDs of the nodes are stored in the corresponding records for the nodes.
  • steps 11.3 to 11.7 are repeated until all nodes with unique types are found and the IDs of the nodes are stored in the corresponding records for the nodes.
  • node 10 In the system of Figure 1 , there is one other node apart from node 4 of a unique type, namely node 10. Node 10 is the only luminaire of that type. From the table of Figure 9 , it is clear that the ID of the node of type 10 is 109. This ID is therefore stored in the record for lamp 10 in the system at step 11.5.
  • step 11.2 If at step 11.2, it is determined that there are no more devices of a unique type in the system, the system proceeds to step 11.9.
  • the system now determines whether there are any two devices in the system in a relationship that is unique.
  • presence detector 7c is the presence detector in the network that is located closest to a gateway, namely gateway 3c.
  • the calculated distances between the devices in the table of Figure 10 indicate that the first presence detector 7a is 5.20m away from a gateway 3a, the second presence detector 7b is 5.73m away from a first gateway 3a and 6.50m away from a second gateway 3b, the third presence detector 7c is 0.10m away from a gateway 3c and the fourth presence detector is 2.50m away from a gateway 3b.
  • presence detector 7c and gateway 3c are identified at step 11.10.
  • step 11.11 the range measurements and the types of the devices listed in Figure 9 are analysed to find presence detector 7c and gateway 3c. It is realised at step 11.10 that the presence detector with ID 108 is 0.10m away from the gateway with ID 111. Consequently, the system deduces that the node with ID 108 must correspond to presence detector 7c and the node with ID 111 must correspond to gateway 3c. ID numbers 108 and 111 are therefore stored in the records of presence detector 7c and gateway 3c respectively at step 11.12. The number of reference nodes found is then incremented by 2 at step 11.13.
  • step 11.14 it is checked whether the number of reference nodes already established is smaller than the total number of nodes in the system. If the number of reference nodes established is smaller than N, the process returns to step 11.8. If the number of reference nodes established is equal or higher than N, the process ends at step 11.8.
  • step 11.9 it is determined whether there are any other pairs of devices with unique relationships. If the system cannot find any more devices with those characteristics, the process continues to step 11.15 and it is determined whether there are any devices with unique range relationships with reference nodes.
  • the building plan of Figure 1 indicates that one of the presence detectors, namely 7d, is substantially closer to reference node 10 than the other presence detectors 7a-7c. Consequently, it is established at step 11.15 that there are devices in the system with unique distance relationships to reference nodes and node 7d is identified at step 11.16.
  • the information in the table of Figure 9 indicates that there are four presence detectors in the system, 103, 107, 108 and 113.
  • the range measurements in Figure 9 show that two of the nodes, nodes 103 and 108, are outside the transmission range of node 10. Moreover, node 108 has already been established as corresponding to node 7c. Consequently, neither node 103, nor node 108 can correspond to node 7d. One of the remaining nodes, the node with ID 107, is 7.8m away from node 10, whereas the other remaining node, the node with ID 113, is only 1.2 meters away from node 10. Consequently, even if there are large errors in the range measurements, it is reasonably to assume that the node with ID 113 corresponds to node 7d.
  • node 7d must correspond to the node with ID 113 at step 11.17 and stores the ID in the record for node 7d at step 11.18.
  • n is incremented by 1 since an additional reference node, node 7d, has now been established.
  • step 11.20 if all the nodes have still not been matched, step 11.15 is repeated. Otherwise, the method ends at step 11.8. All the nodes of the system of Figure 1 have not been matched. Accordingly, the system returns to step 11.15. At step 11.15, it is established that there are additional devices in the system with unique range relationships to reference nodes and steps 11.16 to 11.19 are therefore repeated. As a result, at least dimmer switch 6b, gateway 3b and gateway 3a are established as reference nodes. Dimmer switch 6b and gateway 3b are the dimmer switch and the gateway closest to reference node 10. Moreover, gateway 3a can be identified since it is the gateway that is far closer to reference node 4 than any of the other gateways.
  • step 11.15 it may be realised that there are no more devices in unique relationships with any of the reference nodes.
  • the system then proceeds to step 11.21 and the process for establishing the coordinates of the rest of the nodes with respect to the reference nodes is then started.
  • the remaining nodes may not be in a clearly and unmistakable unique relationship to a specific reference node.
  • the node by comparing the actual range measurements to the calculated range measurements between a node and a number of established reference nodes, the node to be matched.
  • the system has established 8 reference nodes, namely the nodes with ID nos.
  • 106 (4), 109 (10), 108 (7c), 111(3c), 113(7d), 115(6b), 114(3b) and 105 (3a).
  • the coordinates of the rest of the nodes in the system can then be established. As soon as the coordinates of a new node are found, it can be used as a reference node to match the remaining devices.
  • the method of establishing coordinates of a node with reference to nodes with known coordinates is known in the art and will not be described in detail herein.
  • the range measurements to at least four reference nodes are required.
  • the system computes a sphere around each of the four nodes, the surface on which the node can be located.
  • the coordinates of the nodes are found where the spheres intersect. If all the nodes are at ceiling height, only three range measurements are required. Moreover, in some circumstances only two range measurements are needed.
  • the range measurements between node 4 (ID 106) and the node with ID 101 shows that the node with ID 101 can be anywhere on the sphere 39 around node 4.
  • the range measurements between node 3a (ID 105) and the node with ID 101 shows that the node with ID 101 must be somewhere on the surface of the sphere 40 around node 3a.
  • Spheres 39 and 40 intersect on a circle 41, however only one lamp is located on this circle, namely the luminaire indicated as 8a in the building plan. Consequently, the node with ID 101 must correspond to node 8a.
  • the calculated coordinates of node 8a are known and consequently, these must be the coordinates of node 101.
  • an example of a graphical user interface for commissioning, updating and operating the lighting control system may comprise a number of menus and buttons 42, a main view 43 for showing the building plan, and a smaller view 44 listing the current processes that are being run by the system.
  • the building plan 1 is shown in the main view 43 and a hatched outline of a circle is shown around each node that has been matched in the building plan.
  • the graphical user interface may provide a circle around each device that has been identified as and when it is identified. Consequently, the user can check the progress of the commissioning steps. Clicking on a node in the system further triggers a menu 45 to open up providing the user with options for cutting, copying, configuring and changing the settings for the device.
  • One of the menu options in the top menu includes a menu for commissioning the system. Clicking on the menu may reveal a submenu (not shown) for initiating and running the separate process of the commissioning process. Alternatively, or additionally, all the processes may be triggered in sequence as a result of selecting one of the options in the submenu. The current process being performed is shown in the bottom window 44.
  • the invention may be implemented in any wireless network comprising devices to be matched with information associated with corresponding devices in a building plan of such devices stored in a computer system and that the devices can operate according to any suitable wireless protocol.

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Claims (13)

  1. Computerimplementiertes Verfahren zur Inbetriebnahme mehrerer Geräte innerhalb eines drahtlosen Netzwerks (2), wobei das Verfahren die folgenden Schritte umfasst, wonach:
    in einem Plan (1), der in einem Speicher (32) gespeichert ist und auf die mehreren Geräte schließen lässt, ein erstes Gerät (3a-3c, 4, 5a-5b, 6a-6c, 7a-7d, 8a-8f, 9a-9f, 10, 11b, 11b) mit eindeutigen Charakteristiken im Vergleich zu den anderen Geräten in dem Plan identifiziert wird;
    Identifikationsnachrichten von den mehreren Geräten innerhalb des drahtlosen Netzwerks empfangen werden, wobei die Identifikationsnachrichten jeweils einen eindeutigen Identifier sowie Charakteristiken des jeweiligen Geräts der mehreren Geräte innerhalb des Netzwerks umfassen; von den mehreren Geräten das Gerät mit den eindeutigen Charakteristiken identifiziert und der entsprechende eindeutige Identifier dem ersten Gerät in dem Plan zugewiesen wird;
    zwei oder mehr zweite Geräte mit, mit dem ersten Gerät identischen Charakteristiken in dem Plan identifiziert werden und ein jeweiliger relativer Abstand von jedem zweiten Gerät in dem Plan zu dem ersten Gerät in dem Plan ermittelt wird;
    wobei die Identifikationsnachrichten weiterhin Abstandsinformationen umfassen, die den relativen Abstand zu jeweiligen Geräten von zumindest einem Teil der mehreren Geräte angeben; und wobei gemäß dem Verfahren weiterhin
    ein relativer Abstand für jedes zugeordnete zweite Gerät zu einem in dem Plan angegebenen entsprechenden Gerät auf der Basis eines aus dem Plan hervorgehenden Vergleichs des ermittelten relativen Abstands und der in der jeweiligen Identifikationsnachricht vorgesehenen Abstandsinformationen ermittelt wird.
  2. Verfahren nach Anspruch 1, wobei der Plan einen Datensatz für jedes Gerät umfasst, in dem die Koordinaten dieses Geräts in einem Koordinatensystem angegeben sind.
  3. Verfahren nach einem der vorangegangenen Ansprüche, wobei die eindeutigen Charakteristiken einen eindeutigen Typ des Geräts umfassen.
  4. Verfahren nach Anspruch 1, wobei die Abstandsinformationen durch Analysieren von Signalen, die von jedem der mehreren Geräte zu seinen benachbarten Geräten übertragen wurden, und/oder Signalen, die von den jeweiligen benachbarten Geräten zu dem jeweiligen Gerät übertragen wurden, erhalten wurden.
  5. Verfahren nach Anspruch 3, wobei der eindeutige Typ zumindest das Fabrikat, das Modell und die Anzahl von Endpunkten des Geräts beinhaltet.
  6. Computerprogramm mit computerausführbaren Anweisungen, die bei Ausführung durch einen Prozessor (31) bewirken, dass der Prozessor das Verfahren nach einem der vorangegangenen Ansprüche durchführt.
  7. Computerprogramm nach Anspruch 6, das Anweisungen umfasst, um eine grafische Benutzeroberfläche mit einer grafischen Angabe der Geräte vorzusehen, die einem entsprechenden Gerät in dem Plan zugewiesen wurden.
  8. Vorrichtung (18), umfassend:
    Mittel zum Anschluss an ein drahtloses Netzwerk (2);
    einen Speicher (32), um einem Plan (1) entsprechende Informationen von Geräten in dem drahtlosen Netzwerk zu speichern;
    Mittel, um in dem auf die mehreren Geräte hindeutenden Plan (1) ein erstes Gerät (3a-3c, 4, 5a-5b, 6a-6c, 7a-7d, 8a-8f, 9a-9f, 10, 11b, 11b) mit eindeutigen Charakteristiken im Vergleich zu den anderen Geräten in dem Plan zu identifizieren;
    Mittel, um Identifikationsnachrichten von den mehreren Geräten innerhalb des drahtlosen Netzwerks zu empfangen, wobei die Identifikationsnachrichten jeweils einen eindeutigen Identifier sowie Charakteristiken des jeweiligen Geräts der mehreren Geräte innerhalb des Netzwerks umfassen; und
    Mittel, um von den mehreren Geräten das Gerät mit den eindeutigen Charakteristiken zu identifizieren und den entsprechenden eindeutigen Identifier dem ersten Gerät in dem Plan zuzuweisen; sowie
    Mittel, um zwei oder mehr zweite Geräte mit, mit dem ersten Gerät identischen Charakteristiken in dem Plan zu identifizieren und einen jeweiligen relativen Abstand von jedem zweiten Gerät in dem Plan zu dem ersten Gerät in dem Plan zu ermitteln; wobei die Identifikationsnachrichten weiterhin Abstandsinformationen umfassen, die den relativen Abstand zu jeweiligen Geräten von zumindest einem Teil der mehreren Geräte angeben; und wobei die Vorrichtung weiterhin umfasst:
    Mittel, um einen relativen Abstand für jedes zugeordnete zweite Gerät zu einem in dem Plan angegebenen entsprechenden Gerät auf der Basis eines aus dem Plan hervorgehenden Vergleichs des ermittelten relativen Abstands und der in der jeweiligen Identifikationsnachricht vorgesehenen Abstandsinformationen zu ermitteln.
  9. Vorrichtung (18) nach Anspruch 8, wobei das drahtlose System eines oder mehrere der folgenden umfasst:
    ein Beleuchtungssystem und
    ein Home-Automation-Netzwerk.
  10. Vorrichtung (18) nach Anspruch 8 mit einem Personal-Computer.
  11. System, umfassend:
    eine Vorrichtung nach einem der Ansprüche 8 bis 10, sowie
    mehrere in einem drahtlosen Netzwerk geschaltete Geräte, wobei die mehreren Geräte mindestens ein Gateway (3a-3c) umfassen, das so arbeitet, dass es mit der Vorrichtung kommuniziert.
  12. System nach Anspruch 11, wobei das mindestens eine Gateway (3a-3c) so arbeitet, dass es mit der Vorrichtung (18) über eine LAN-Verbindung kommuniziert.
  13. Vorrichtung nach Anspruch 11, wobei die mehreren Geräte mehrere ZigBee-Geräte umfassen.
EP07826194.8A 2006-09-06 2007-08-29 Lokalisierung von referenzknoten zur positionierung Active EP2067108B1 (de)

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WO2008029326A3 (en) 2008-05-22
CN101512530B (zh) 2016-02-03
WO2008029326A2 (en) 2008-03-13
JP2010503307A (ja) 2010-01-28
EP2067108A2 (de) 2009-06-10
PL2067108T3 (pl) 2016-10-31
JP5388206B2 (ja) 2014-01-15
US8290437B2 (en) 2012-10-16
US20100035546A1 (en) 2010-02-11
RU2009112390A (ru) 2010-10-20
CN101512530A (zh) 2009-08-19
RU2466454C2 (ru) 2012-11-10

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